地方本科院校无机化学全教学实践与探索
郭海洋, 朱龙凤, 钟伟, 朱连文, 李蕾
【大学化学】doi: 10.12461/PKU.DXHX202411016
构建全英文课程体系对于培育具备全球视野的人才具有重大意义,它是推进教育国际化的关键环节。在全球化进程和教育政策的引领下,本项研究着眼于地方本科院校在全英文无机化学课程教学中面临的挑战,进行了深入的实践探索。研究详尽介绍了具体的实施策略及其成效,涵盖了课程概述、教学目标、教学内容、教学资源、教学方法、教师团队、课程思政以及教学效果等8个关键领域,归纳并提炼了无机化学全英文课程建设的特色与创新点,旨在为国内相似课程的建设提供参考和启示。
关键词: 地方本科院校, 无机化学, 全英教学
BiOCl/聚苯胺的制备及其光催化降解罗丹B性能
张霞, 白羽石, 常熙, 张晗, 张灏昱, 彭利满, 黄姝姝
【无机化学学报】doi: 10.11862/CJIC.20240255
采用原位聚合法制备了氯氧化铋(BiOCl)与聚苯胺(PANI)复合的Ⅱ型异质结光催化剂BiOCl/PANI,并采用X射线衍射(XRD)、傅里叶变换红外光谱(FTIR)、透射电子显微镜(TEM)、X射线光电子能谱(XPS)、紫外可见漫反射光谱(UV-Vis DRS)和N2吸附-脱附测试等多种技术手段对其进行了表征,考察了BiOCl/PANI在模拟可见光下对罗丹明B (RhB)的光催化降解性能。实验结果表明:BiOCl/PANI催化剂比PANI和BiOCl具有更高的光催化活性,在RhB质量浓度为50 mg·L-1、PANI与BiOCl的物质的量之比为0.02∶1、50 mg·L-1的催化剂条件下,所制备的BiOCl/PANI光催化150 min后,RhB降解率为98.8%,速率常数为0.031 min-1;经过4次循环实验后,RhB降解率从98.8%降低至98.4%,表现出良好的稳定性和可重复利用性。光催化剂BiOCl/PANI实现了电子和空穴对的快速分离,降低了二者在催化剂内部的复合速率,提高了光催化性能。
关键词: 光催化, Ⅱ型异质结, BiOCl/polyaniline, 罗丹明B
荧光定量分析实验的改进——化学计量学辅助的三维荧光法同时测定食品中的罗丹6G和罗丹123
文密, 贾宝硕, 柴永琪, 王童, 刘剑波, 吴海龙
【大学化学】doi: 10.12461/PKU.DXHX202405147
仪器分析实验“分子荧光法测定罗丹明B的含量”存在实验过于简单、未考虑实际情况等问题。因此,本改进实验在三维荧光扫描模式下获取样本数据,不进行复杂预处理,而是运用化学计量学算法解析出目标分析物的纯信号,进而实现了染色辣椒中罗丹明6G和123的同时测定。本改进实验提高了学生全面考虑问题和创新解决问题的能力。
关键词: 罗丹明6G, 罗丹明123, 三维荧光, 化学计量学, 染色辣椒
Construction and photocatalytic properties toward rhodamine B of CdS/Fe3O4 heterojunction
Yuan CONG, Yunhao WANG, Wanping LI, Zhicheng ZHANG, Shuo LIU, Huiyuan GUO, Hongyu YUAN, Zhiping ZHOU
【无机化学学报】doi: 10.11862/CJIC.20240219
A simple two-step hydrothermal method synthesized four different CdS/Fe3O4 photocatalysts with varying ratios of mass of CdS to Fe3O4. The composition and morphology of the prepared samples were investigated using X-ray diffraction (XRD), Raman spectrum, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Solid UV reflectance spectra testing found that CdS/Fe3O4 nanocomposites had good light absorption throughout the spectral range, promoting their photocatalytic properties. Under visible light irradiation, CdS/Fe3O4 (2:5) with a mass ratio of 2:5 exhibited excellent photocatalytic performance, with a degradation rate of 98.8% for rhodamine B. Furthermore, after five cycles of photocatalytic degradation reaction, the rhodamine B degradation rate remained at 96.2%, indicating that the photocatalysts have good photocatalytic stability.
关键词: CdS/Fe3O4, photocatalyst, degradation rate, rhodamine B
Corn straw-derived carbon/BiOBr composite: Synthesis and photocatalytic degradation performance for rhodamine B
Jin ZHANG, Yuting WANG, Bin YU, Yuxin ZHONG, Yufeng ZHANG
【无机化学学报】doi: 10.11862/CJIC.20250028
A flower-like BiOBr photocatalyst (CS/BiOBr) was prepared by using the carbon material derived from corn straw (CS) as the carrier. The prepared composites were characterized by X - ray diffraction (XRD), Fourier transform infrared (FIIR) spectra, scanning electron microscope (SEM), X - ray photoelectron spectra (XPS), and UV-Vis diffuse reflectance spectra (UV-Vis DRS). The SEM analyses indicate that the introduction of CS promotes the formation of a unique flower-like structure in BiOBr, which not only optimizes the efficiency of light capture but also increases the specific surface area of BiOBr. The bandgap of the composite was narrower compared with the pure BiOBr. The CS/BiOBr composites exhibited higher photocatalytic activity than pure CS and BiOBr under visible light irradiation, and a higher first-order reaction rate constant (k) of 0.043 7 min-1 than BiOBr (0.014 6 min-1), and exhibited excellent stability and reusability during the cyclic run. The enhanced photocatalytic activity is attributed to the efficient separation of photoinduced electrons and holes. Superoxide radicals and holes were the major active species.
关键词: corn straws, agricultural waste, BiOBr, photocatalysis, rhodamine B
萘酚醛夫碱过渡金属配合物的合成、晶体结构及抗肿瘤活性
吴静, 惠朴真, 郑慧林, 袁平川, 汪春飞, 王慧, 谷晓霞
【无机化学学报】doi: 10.11862/CJIC.20240278
合成了3种萘酚醛缩色胺席夫碱过渡金属配合物[Cu (L)2(DMF)2](1)、[Ni (L)2(DMF)2](2)和[Zn (L)2](3),其中HL=N-[(2-hydroxy-1-naphthalenyl) methylene]-[(1H-indol-3-yl) ethyl]imine。利用红外光谱、元素分析和单晶X射线衍射等测试手段对配合物1~3进行了结构表征。采用MTT法对该系列配合物进行了体外抗肿瘤活性初筛,结果表明配合物1~3对人胃癌细胞MGC-803、人非小细胞肺癌细胞A549和人乳腺癌细胞MDA-MB-231都有较好的抑制作用。通过流式细胞术检测配合物1诱导肿瘤细胞凋亡的情况,结果显示配合物1诱导MGC-803细胞发生晚期凋亡;随后,细胞刮板实验表明随着配合物1浓度的增加,其对MGC-803细胞的杀伤作用增强,且杀伤作用呈剂量依赖性。
关键词: 萘酚醛席夫碱, 过渡金属配合物, 合成, 晶体结构, 抗肿瘤活性
吡啶基夫碱铟和镝配合物的抗肿瘤及抗菌活性
鹿晓彤, 张攀, 赵子杰, 黄蕾, 左红伟, 梁丽丽
【无机化学学报】doi: 10.11862/CJIC.20250073
N′-[(1E)-吡啶-2-亚甲基]吡啶-4-碳酰肼(HL)配体与铟离子/镝离子合成了2种金属配合物[In(HL)(NO3)3] (1)和[Dy(L)(CH3OH)0.89(H2O)1.11(NO3)2]·0.11H2O (2)。单晶X射线衍射表明,配合物12均具有由1个配体连接1个金属离子形成的零维单核结构。体外抗增殖活性研究表明,配合物1对人肝癌细胞SMMC-7721、人乳腺癌细胞MDA-MB-231及人非小细胞肺癌细胞A549的抗肿瘤活性均优于顺铂;配合物2对SMMC-7721及A549的抗肿瘤活性也优于顺铂。伤口愈合实验显示配合物12可以抑制A549细胞迁移能力,且呈浓度依赖性。此外,配合物2对大肠杆菌具有显著的抑菌效果,抑菌圈直径达到22 mm。
关键词: 晶体结构, 配合物, 席夫碱, 抗肿瘤, 抗菌
一例由多齿夫碱构筑的Tb2配合物的结构、荧光性质及生物活性
马鑫, 孙娅, 孙楠, 康倩, 张佳佳, 朱瑞涛, 高晓丽
【无机化学学报】doi: 10.11862/CJIC.20230357
使用多齿希夫碱配体H4L(H4L=N',N″-((1E,1'E)-(1,10-菲咯啉-2,9-二酰基)双(亚甲基)双(2-羟基苯甲酰肼))与Tb(acac)3·2H2O反应(acac-=乙酰丙酮根),通过溶剂热法,设计并合成了一例结构新颖的双核铽配合物[Tb2(L)(H2L)]·2CH3OH·CH3CN (1),并研究了该配合物的结构、荧光性质及生物活性。单晶X射线衍射分析表明该配合物主要含有2个Tb离子和2个失去不同质子的配体离子(L4-和H2L2-)。中心Tb1和Tb2离子都是九配位的,其几何构型呈现扭曲的呼啦圈形。固体荧光实验测试结果表明:该配合物在室温下表现出Tb离子的荧光特征发射峰。生物活性研究表明,与配体H4L和稀土离子相比较,配合物具有更强的抗菌活性。采用紫外可见光谱法、循环伏安法、凝胶电泳法和荧光光谱法研究了该配合物与小牛胸腺DNA之间的相互作用,结果表明配合物主要以插入作用的方式与小牛胸腺DNA结合。
关键词: Tb2配合物, 生物活性, DNA作用, 荧光性质, 晶体结构
Synthesis, structural characterization, bio-activity, and density functional theory calculation on Cu(Ⅱ) complexes with hydrazone-based Schiff base ligands
Maitri Bhattacharjee, Rekha Boruah Smriti, R. N. Dutta Purkayastha, Waldemar Maniukiewicz, Shubhamoy Chowdhury, Debasish Maiti, Tamanna Akhtar
【无机化学学报】doi: 10.11862/CJIC.20240007
Three new copper(Ⅱ) complexes 1-3 of Schiff base ligands HL1 (2-hydroxybenzaldehyde2-(2-oxo-1, 2-diphenylethylidene)hydrazone), HL2 (4-hydroxybenzaldehyde2-(2-oxo-1, 2-diphenylethylidene)hydrazone) and L3 (2-methoxybenzaldehyde2-(2-oxo-1, 2-diphenylethylidene)hydrazone) were synthesized from methanolic medium. The complexes were characterized by elemental analyses, spectroscopic methods, magnetic susceptibility measurements, and density functional theory (DFT) studies. The synthesized ligands were characterized structurally by single-crystal X-ray diffraction studies. The optimized structure of the complexes was ascertained by DFT studies. The DNA binding ability of the complexes with calf thymus DNA (CT-DNA) was studied by UV-Vis absorption and fluorescence emission spectral studies. Absorption spectral studies revealed a hyperchromic effect and suggested the possible mode of interaction with CT-DNA. The competitive binding studies using ethidium bromide (EB) show that the complexes can replace DNA from DNA-EB adduct and suggests that the complexes probably bind to CT-DNA in intercalative mode. In vitro antibacterial activity of the complexes against Gram-negative bacteria Klebsiella pneumoniae (K. pneumoniae), Escherichia coli(E. coli), and Shigella boydii (S. boydii), and gram-positive bacteria Staphylococcus aureus (S. aureus) exhibited an appreciable antibacterial activity of complex 2 against K. pneumoniae and S. boydii, but complexes 1 and 3 did not show any significant antibacterial activity.
关键词: Cu(Ⅱ) complex, Schiff base, structure, bio-activity, density functional theory
一例简单的夫碱探针对次氯酸根的荧光开启识别及生物成像应用
闫金龙, 吴伟娜, 王元
【无机化学学报】doi: 10.11862/CJIC.20240154
通过缩合反应制备了一例简单的席夫碱探针苯并色烯-2-甲醛缩二氨基马来腈(1),使用核磁共振氢谱/碳谱、质谱和单晶X射线衍射等手段表征了探针的结构。荧光测试表明,探针1自身无荧光,而次氯酸根(ClO-)能够特异性打开探针1在530 nm处的强荧光发射。探针1对ClO-响应灵敏且在数秒内完成。通过质谱和理论计算手段研究了ClO-介导的探针1的分解反应机理。此外,该探针还可用于活细胞、斑马鱼和拟南芥中ClO-的荧光成像。
关键词: 苯并色烯, 生物成像, 荧光探针, 次氯酸根, 席夫碱

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